swelling

Hello...I had a 360 fusion from L4-S1 at the beginning of Feb. As expected my stomach was pretty swollen for about 6 weeks... It went back to normal until a couple days ago...Now its really swollen again..I started PT about 1 1/2 weeks ago ...is it possible that the increased activity irritated it? Not to be horribly vain but between the scars front and back...looking pregnant on top of it is sending me over the edge! Any ideas?